EP0903268B1 - Side airbag head restraint system for a vehicle passenger - Google Patents

Side airbag head restraint system for a vehicle passenger Download PDF

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Publication number
EP0903268B1
EP0903268B1 EP98115832A EP98115832A EP0903268B1 EP 0903268 B1 EP0903268 B1 EP 0903268B1 EP 98115832 A EP98115832 A EP 98115832A EP 98115832 A EP98115832 A EP 98115832A EP 0903268 B1 EP0903268 B1 EP 0903268B1
Authority
EP
European Patent Office
Prior art keywords
gas bag
restraint system
flap
container
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98115832A
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German (de)
French (fr)
Other versions
EP0903268A1 (en
Inventor
Hans-Joachim Tietze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TRW Occupant Restraint Systems GmbH
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TRW Occupant Restraint Systems GmbH
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Publication date
Application filed by TRW Occupant Restraint Systems GmbH filed Critical TRW Occupant Restraint Systems GmbH
Publication of EP0903268A1 publication Critical patent/EP0903268A1/en
Application granted granted Critical
Publication of EP0903268B1 publication Critical patent/EP0903268B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/213Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle roof frames or pillars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/04Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/04Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings
    • B60R2021/0414Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings using energy absorbing ribs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/04Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings
    • B60R2021/0435Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings associated with the side or roof pillars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • B60R21/2176Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together the air bag components being completely enclosed in a soft or semi-rigid housing or cover

Definitions

  • the invention relates to a head-side gas bag restraint system for Vehicle occupants, with an airbag, a receptacle for the Airbag to be attached to the vehicle, with the receptacle an outer wall, one facing the passenger compartment when installed Has inner wall and at least one flap that the container in closes the non-activated state of the system and in the event of retention swings open, and a shot channel between the outer and inner wall is formed for the airbag that unfolds in the event of a restraint.
  • the invention relates to a gas bag restraint system a head gas bag, which is attached to the roof frame of the vehicle Receptacle is housed.
  • a generic airbag restraint system is from the DE 296 05 896 41 known.
  • the airbag is an elongated one Head gas bag, which extends from approximately the A pillar of the vehicle to extends approximately to the C-pillar.
  • the receptacle is a flexible assembly hose in which the folded gas bag is inserted. When unfolded, the longitudinally slotted assembly hose expands and clears the way for the gas bag.
  • no so-called firing channel is provided, such as he is known for rigid receptacles. This firing channel lays the direction of unfolding for the beginning of the unfolding process.
  • the known rigid containers have either a cross section open or closed U shape.
  • the container With the closed U-shape the container is closed by a flap, which when unfolded the gas bag is swung open.
  • a flap which when unfolded the gas bag is swung open.
  • the opening angle of the flap can be restricted, which allows that not only the inner wall and the outer wall the Define shot channel, but also also the flap as Extension of the inner or outer wall.
  • the gas bag In certain accident situations, it may happen that the gas bag is not deployed, but the occupant against the flap or the Inner wall of the container bumps. Especially with one on the roof frame attached container, there may be head contact with the container.
  • the containers are mostly under a cover of the roof frame arranged, which has a thin foam layer, this cover cannot prevent head injuries.
  • the invention provides an airbag restraint system, in particular a head airbag restraint system that prevents injuries to the occupant counteracts.
  • a head airbag restraint system that prevents injuries to the occupant counteracts.
  • This is the case with an airbag restraint system type mentioned achieved in that structures on the flap attached with recesses or cavities, in particular molded that are plastically deformed by hitting the head.
  • the wall provided between adjacent recesses or cavities made of plastically deformable material can be struck in the recesses or cavities are moved so that a high Energy absorption capacity is given.
  • the flap takes itself some of the energy of the head on, so the risk of injury can be reduced.
  • the previously planned additional Upholstery in the area of the cover of the container can be complete omitted, so that the special design of the container is not necessarily lead to a reduction in headroom, but even an increase in headroom can be achieved.
  • the Invention not only reduces the risk of injury when not triggered airbag, but also when triggered, because with the previous systems the flap opened towards the occupant point and the occupant could bump against this door.
  • a soft one Flap also reduces the risk of injury in this case clear.
  • the ribs are preferably an integral part of the Flap, that is, the entire flap including the ribbed structure is integrally formed. It can thus be foamed, for example or syringes.
  • the flap has a ribbed structure and the recesses between the ribs or voids are present. Because the cavities that are contrary to the recesses are closed to the outside, and the recesses can have any shape, the ribs are accordingly in theirs Any geometry. For example, they can be linear or curved if, for example, spherical cavities are provided. Also a kind of honeycomb structure falls under the term ribbed structure.
  • the ribs must namely preferably transversely to the direction of the application of force, in the present case transverse to the direction of head impact run. There should be several in the direction of force application Connect cavities or recesses and ribs to each other so that the ribs are moved into the cavities or recesses can. When the ribs are aligned in the direction of force application the occupant's head would be simultaneously on several ribs in the area open from the ends, so that they would have to bend to be plastic to give way.
  • the cavity formed by overmolding a hollow body inserted into the flap which is a very inexpensive manufacturing variant.
  • the special structure of the flap and their orientation relative to the direction of force application maximum deformation path that allows almost the entire width of the Flap and thus the distance between the inner and outer wall. This is particularly the case if not just that Flap designed to be flexible and energy-absorbing, but also the entire container is deformable by the inner wall up to System on the outer wall is elastically or plastically deformable, whereby even more energy can be absorbed.
  • the container can also be curved, it is advantageous to if several flaps arranged one after the other are provided, by which ensures easy closing and opening of the flaps is.
  • Fig. 1 is a head-side airbag restraint system for vehicle occupants shown that extends along the roof frame from the side of the Rear occupants extend to the side of the front occupant.
  • the restraint system includes a substantially U-shaped in cross section Receptacle 3 with an outer wall 5 with which the container 3 on Roof frame is attached, and one in the passenger compartment in built Condition facing inner wall 7.
  • the inner wall 7 is in cross section seen shorter than the outer wall 5.
  • flaps 11 are numerous flaps 11 arranged one after the other via hinges 9 provided (see also Fig. 6). In Fig. 1 the flap 11 is in shown pivoted state so that the container 3 is open.
  • a folded head gas bag 13 At the upper end of the container 3 there is a folded head gas bag 13 arranged, which is designed as a so-called curtain and in inflated state largely covers the side windows.
  • a so-called lance 15 Internally of the gas bag a so-called lance 15 is provided, which is almost extends over the entire length of the gas bag and that as a gas line serves so that the elongated airbag not only from one end, but almost uniformly over its entire upper edge is inflated.
  • the lance has numerous openings 17 its bottom.
  • the result is between the folded gas bag 13 and the hinge 9 a so-called weft channel 19.
  • the weft channel 19 determines at the beginning the direction of deployment of the gas bag 13.
  • the flap 11 is integrally connected to the inner wall 7.
  • the Hinge 9 is formed by forming a thin wall part.
  • the Flap 11 is composed of several components, namely one inside, elastically deformable base plate 21, from which also Inner and outer wall 5, 7 exist, as well as a further component, namely a plastically deformable attached to the base plate 21 Edition 23.
  • Edition 23 has an energy-absorbing, ribbed structure, as shown in Figures 3 to 5 at different Examples is shown.
  • the support 23 has numerous ribs 25 on that as a wall between enclosed cavities, of which the cavity 26 is indicated in FIG. 1, and recesses 27 are used.
  • the recesses 27 are on the outside, more precisely to that of the passenger compartment facing outside open.
  • the overlay can have cross ribbing (see FIG.
  • hemispherical recesses 27 see. Fig. 4
  • have a honeycomb structure see. Fig. 5
  • the ribs 25 are made of easily plastically deformable plastic material. From the outside a thin cover 29 (see FIG. 1) glued to the pad 23 or inserted (e.g. by a clip connection) so that the recesses 27 are closed to the outside and a closed overall Body for energy absorption results.
  • Snap connections 31 at the bottom of each flap 11 and at the bottom Edge of the inner wall 5 serve to close the container 3 by the flaps 11 after inserting the lance 15 with the gas bag 13 in the direction be pivoted to the outer wall 5 and remain attached to it.
  • the locking connections 31 must of course be designed in this way be that when you open the flaps 11 by the unfolding Gas bag 13 does not lead to the destruction of the gas bag 13 or the unfolding process influence.
  • the energy absorbing Structure of the flap 11 achieved in that it Injection molding of a tubular, inserted hollow body 33 is formed is.
  • the roof frame 35 can be seen on which the Outside wall 5 is attached. Otherwise, the same parts are also included the same reference numerals in the different figures.
  • flap 11 As a hollow body consists, for example, in the so-called gas internal pressure process is produced and thereby cavities are formed.
  • the gas bag 13 is not shown in FIG. 2 for the rest shown.
  • the gas bag restraint system according to the invention has the advantage in that both in the closed state and in the open Condition of the receptacle 3 head injuries due to the impact of the Head on the container, in particular on the flap 11, can be reduced can.
  • the flap 11 is designed to absorb energy by so to speak, some layers of ribs 25 are plastically deformable, so that the head does not hit the roof frame 35 directly.
  • the outer and inner walls 5, 7 made of resilient material, in particular are elastic plastic the container gives on impact Head so far without breaking into pieces until in In extreme cases, the gas bag 13 is compressed and the inner wall 7 on the outer wall 5 abuts. Also thanks to the flexibility of the container even energy can be broken down.
  • the embodiment shown in Figure 7 differs from of the one shown in Figure 1 insofar as the pad 23 is not as separate, attached to the base plate 21 is formed. Rather, the entire container, including the flap and the ribbed one Structure formed in one piece. So that the flap is one if possible has high energy absorption capacity, its orientation including the Alignment of their ribs relative to that shown by an arrow Direction of force application when the head hits crucial.
  • the base plate 21 extends essentially parallel to the direction of force application, and the ribs perpendicular this so that when force is applied to the recesses and cavities can be moved.
  • the base plate 21 is also a matter of course plastically deformed on impact of the head.
  • Fig. 7 is the roof frame 35 shown in more detail. So that the shot channel 19 to the side window (not shown) is exactly aligned, are on the outer wall 5 numerous webs 37 are integrally formed, which are interconnected by cross webs 39 are connected. With previously known restraint systems a molded foam part is always interposed in this area, the now can be omitted.
  • the webs 37 and the cross webs 39 result closed cavities between the outer wall when installed 5 and the roof frame 35, in which the tips of the latching connections 31, which are torn off when the flap 11 is opened, remain lying. Also the webs 37, 39 take energy upon impact with the occupant's head on.

Description

Die Erfindung betrifft ein Kopf-Seitengassack-Rückhaltesystem für Fahrzeuginsassen, mit einem Gassack, einem Aufnahmebehälter für den Gassack, der am Fahrzeug zu befestigen ist, wobei der Aufnahmebehälter eine Außenwand, eine dem Fahrgastraum im eingebauten Zustand zugewandte Innenwand und wenigstens eine Klappe hat, die den Behälter im nichtaktivierten Zustand des Systems verschließt und die im Rückhaltefall aufschwenkt, und wobei zwischen Außen- und Innenwand ein Schußkanal für den sich im Rückhaltefall entfaltenden Gassack gebildet ist. Insbesondere betrifft die Erfindung ein Gassack-Rückhaltesystem mit einem Kopf-Gassack, der in einem am Dachrahmen des Fahrzeugs befestigten Aufnahmebehälter untergebracht ist.The invention relates to a head-side gas bag restraint system for Vehicle occupants, with an airbag, a receptacle for the Airbag to be attached to the vehicle, with the receptacle an outer wall, one facing the passenger compartment when installed Has inner wall and at least one flap that the container in closes the non-activated state of the system and in the event of retention swings open, and a shot channel between the outer and inner wall is formed for the airbag that unfolds in the event of a restraint. In particular, the invention relates to a gas bag restraint system a head gas bag, which is attached to the roof frame of the vehicle Receptacle is housed.

Ein gattungsgemäßes Gassack-Rückhaltesystem ist aus der DE 296 05 896 41 bekannt. Dabei ist der Gassack ein langgestreckter Kopf-Gassack, welcher sich von annähernd der A-Säule des Fahrzeugs bis annähernd zur C-Säule erstreckt. Der Aufnahmebehälter wiederum ist ein flexibler Montageschlauch, in den der gefaltete Gassack eingelegt ist. Beim Entfalten dehnt sich der in Längsrichtung geschlitzte Montageschlauch aus und gibt den Weg für den Gassack frei. Nachteilig an dieser Lösung ist, daß kein sogenannter Schußkanal vorgesehen ist, wie er bei starren Aufnahmebehältern bekannt ist. Dieser Schußkanal legt für den Beginn des Entfaltungsvorgangs die Entfaltungsrichtung fest. Die bekannten starren Behälter haben im Querschnitt entweder eine offene oder eine geschlossene U-Form. Bei der geschlossenen U-Form wird der Behälter durch eine Klappe geschlossen, die beim Entfalten des Gassacks aufgeschwenkt wird. Z.B. durch Vorsehen von Fangbändern oder Anschlägen kann der Öffnungswinkel der Klappe beschränkt sein, was es ermöglicht, daß nicht nur die Innenwand und die Außenwand den Schußkanal definieren, sondern zudem auch noch die Klappe als Verlängerung der Innen- oder der Außenwand.A generic airbag restraint system is from the DE 296 05 896 41 known. The airbag is an elongated one Head gas bag, which extends from approximately the A pillar of the vehicle to extends approximately to the C-pillar. The receptacle is a flexible assembly hose in which the folded gas bag is inserted. When unfolded, the longitudinally slotted assembly hose expands and clears the way for the gas bag. Disadvantageous this solution is that no so-called firing channel is provided, such as he is known for rigid receptacles. This firing channel lays the direction of unfolding for the beginning of the unfolding process. The known rigid containers have either a cross section open or closed U shape. With the closed U-shape the container is closed by a flap, which when unfolded the gas bag is swung open. For example, by providing tether straps or stops, the opening angle of the flap can be restricted, which allows that not only the inner wall and the outer wall the Define shot channel, but also also the flap as Extension of the inner or outer wall.

In bestimmten Unfallsituationen kann es vorkommen, daß der Gassack nicht entfaltet wird, der Insasse aber gegen die Klappe oder die Innenwand des Behälters stößt. Insbesondere bei einem am Dachrahmen befestigten Behälter kann es zum Kopfkontakt mit dem Behälter kommen. Zwar sind die Behälter meist unter einer Abdeckung des Dachrahmens angeordnet, die eine dünne Schaumstoffschicht aufweist, diese Abdeckung kann jedoch nicht Kopfverletzungen vorbeugen.In certain accident situations, it may happen that the gas bag is not deployed, but the occupant against the flap or the Inner wall of the container bumps. Especially with one on the roof frame attached container, there may be head contact with the container. The containers are mostly under a cover of the roof frame arranged, which has a thin foam layer, this cover cannot prevent head injuries.

Die Erfindung schafft ein Gassack-Rückhaltesystem, insbesondere ein Kopf-Gassack-Rückhaltesystem, das diesen Verletzungen des Insassen entgegenwirkt. Dies wird bei einem Gassack-Rückhaltesystem der eingangs genannten Art dadurch erreicht, daß an der Klappe Strukturen mit Ausnehmungen oder Hohlräumen angebracht, insbesondere angeformt sind, die durch Aufschlag des Kopfes plastisch deformiert werden. Die zwischen benachbarten Ausnehmungen oder Hohlräumen vorgesehene Wandung aus plastisch verformbarem Material kann bei seitlichem Auftreffen in die Ausnehmungen oder Hohlräume verschoben werden, so daß ein hohes Energieabsorptionsvermögen gegeben ist.The invention provides an airbag restraint system, in particular a head airbag restraint system that prevents injuries to the occupant counteracts. This is the case with an airbag restraint system type mentioned achieved in that structures on the flap attached with recesses or cavities, in particular molded that are plastically deformed by hitting the head. The wall provided between adjacent recesses or cavities made of plastically deformable material can be struck in the recesses or cavities are moved so that a high Energy absorption capacity is given.

Beim erfindungsgemäßen Gassack-Rückhaltesystem nimmt die Klappe selbst einen Teil der Energie des Kopfes auf, so daß die Verletzungsgefahr herabgesetzt werden kann. Die bislang vorgesehene zusätzliche Polsterung im Bereich der Abdeckung des Behälters kann vollständig entfallen, so daß die besondere Ausgestaltung des Behälters nicht notwendigerweise zur Verringerung der Kopffreiheit führen muß, sondern sogar eine Vergrößerung der Kopffreiheit erreicht werden kann. Die Erfindung verringert nicht nur die Verletzungsgefahr bei nicht ausgelöstem Gassack, sondern auch bei ausgelöstem, da bei den bisherigen Systemen die aufgeschwenkte Klappe in Richtung zum Insassen weisen und der Insasse gegen diese Klappe stoßen konnte. Eine weiche Klappe hingegen verringert das Verletzungsrisiko auch in diesem Fall deutlich. Vorzugsweise sind die Rippen integraler Bestandteil der Klappe, das heißt, die gesamte Klappe samt der verrippten Struktur ist einstückig ausgebildet. Sie kann somit zum Beispiel durch Schäumen oder Spritzen hergestellt werden.In the gas bag restraint system according to the invention, the flap takes itself some of the energy of the head on, so the risk of injury can be reduced. The previously planned additional Upholstery in the area of the cover of the container can be complete omitted, so that the special design of the container is not necessarily lead to a reduction in headroom, but even an increase in headroom can be achieved. The Invention not only reduces the risk of injury when not triggered airbag, but also when triggered, because with the previous systems the flap opened towards the occupant point and the occupant could bump against this door. A soft one Flap, however, also reduces the risk of injury in this case clear. The ribs are preferably an integral part of the Flap, that is, the entire flap including the ribbed structure is integrally formed. It can thus be foamed, for example or syringes.

Bei der bevorzugten Ausführungsform ist vorgesehen, daß die Klappe eine verrippte Struktur hat und zwischen den Rippen die Ausnehmungen oder Hohlräume vorhanden sind. Da die Hohlräume, die im Gegensatz zu den Ausnehmungen nach außen geschlossen sind, und die Ausnehmungen jede Form haben können, sind die Rippen entsprechend auch in ihrer Geometrie beliebig. Beispielsweise können sie linear verlaufen oder gekrümmt, wenn zum Beispiel sphärische Hohlräume vorgesehen sind. Auch eine Art Wabenstruktur fällt unter den Begriff verrippte Struktur.In the preferred embodiment it is provided that the flap has a ribbed structure and the recesses between the ribs or voids are present. Because the cavities that are contrary to the recesses are closed to the outside, and the recesses can have any shape, the ribs are accordingly in theirs Any geometry. For example, they can be linear or curved if, for example, spherical cavities are provided. Also a kind of honeycomb structure falls under the term ribbed structure.

Wichtig zur Erzielung eines hohen Energieabsorptionsvermögens ist die Ausrichtung der Rippen relativ zur Richtung der Krafteinleitung. Die Rippen müssen nämlich vorzugsweise quer zur Richtung der Krafteinleitung, im vorliegenden Fall quer zur Kopfaufschlagrichtung verlaufen. Es sollten sich in Krafteinleitungsrichtung mehrere Hohlräume oder Ausnehmungen und Rippen aneinander anschließen, damit die Rippen in die Hohlräume oder Ausnehmungen verschoben werden können. Bei einer Ausrichtung der Rippen in Krafteinleitungsrichtung würde der Kopf des Insassen gleichzeitig auf mehrere Rippen im Bereich von deren Enden aufschlagen, so daß diese knicken müßten, um plastisch nachzugeben.It is important to achieve a high energy absorption capacity the orientation of the ribs relative to the direction of force application. The ribs must namely preferably transversely to the direction of the application of force, in the present case transverse to the direction of head impact run. There should be several in the direction of force application Connect cavities or recesses and ribs to each other so that the ribs are moved into the cavities or recesses can. When the ribs are aligned in the direction of force application the occupant's head would be simultaneously on several ribs in the area open from the ends, so that they would have to bend to be plastic to give way.

Gemäß einer anderen Ausgestaltung der Erfindung ist der Hohlraum durch Umspritzen eines in die Klappe eingelegten Hohlkörpers gebildet, was eine sehr kostengünstige Herstellungsvariante darstellt.According to another embodiment of the invention, the cavity formed by overmolding a hollow body inserted into the flap, which is a very inexpensive manufacturing variant.

Gemäß der Erfindung wird durch die besondere Struktur der Klappe und deren Ausrichtung relativ zur Richtung der Krafteinleitung ein maximaler Deformationsweg ermöglicht, der fast der gesamten Breite der Klappe und damit des Abstandes zwischen Innen- und Außenwand entspricht. Dies ist insbesondere dann der Fall, wenn nicht nur die Klappe nachgiebig und energieabsorbierend ausgebildet, sondern auch der gesamte Behälter verformbar ist, indem die Innenwand bis zur Anlage an die Außenwand elastisch oder plastisch verformbar ist, wodurch noch mehr Energie absorbiert werden kann.According to the invention, the special structure of the flap and their orientation relative to the direction of force application maximum deformation path that allows almost the entire width of the Flap and thus the distance between the inner and outer wall. This is particularly the case if not just that Flap designed to be flexible and energy-absorbing, but also the entire container is deformable by the inner wall up to System on the outer wall is elastically or plastically deformable, whereby even more energy can be absorbed.

Da der Behälter auch gekrümmt verlaufen kann, ist es vorteilhaft, wenn mehrere nacheinander angeordnete Klappen vorgesehen sind, durch die ein leichtes Verschließen und Öffnen der Klappen sichergestellt ist.Since the container can also be curved, it is advantageous to if several flaps arranged one after the other are provided, by which ensures easy closing and opening of the flaps is.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung und aus den nachfolgenden Zeichnungen, auf die Bezug genommen wird. In den Zeichnungen zeigen:

  • Fig. 1 eine Querschnittsansicht durch eine erste Ausführungsform des erfindungsgemäßen Gassack-Rückhaltesystems, welches als Kopf-Gassack-Rückhaltesystem ausgebildet ist,
  • Fig. 2 eine Querschnittsansicht durch eine zweite Ausführungsform des erfindungsgemäßen Gassack-Rückhaltesystems, ebenfalls als Kopf-Gassack-Rückhaltesystem ausgebildet,
  • Fign. 3 bis 5 verschiedene Ausführungsformen der Klappe des Aufnahmebehälters gemäß Ansicht A in Fig. 1 mit geöffneten Klappen,
  • Fig. 6 eine Seitenansicht des geschlossenen Aufnahmebehälters für den Kopf-Gassack, wobei der Aufnahmebehälter den in Fig. 1 gezeigten Querschnitt hat, und
  • Fig. 7 eine Querschnittsansicht durch eine weitere Ausführungsform des erfindungsgemäßen Gassack-Rückhaltesystems, das als Kopf-Gassack-Rückhaltesystem ausgebildet ist, im eingebauten Zustand.
  • Further features and advantages of the invention result from the following description and from the following drawings, to which reference is made. The drawings show:
  • 1 is a cross-sectional view through a first embodiment of the gas bag restraint system according to the invention, which is designed as a head gas bag restraint system,
  • 2 shows a cross-sectional view through a second embodiment of the gas bag restraint system according to the invention, also designed as a head gas bag restraint system,
  • FIGS. 3 to 5 different embodiments of the flap of the receptacle according to view A in FIG. 1 with the flaps open,
  • 6 is a side view of the closed receptacle for the head gas bag, the receptacle having the cross section shown in FIG. 1, and
  • 7 shows a cross-sectional view through a further embodiment of the gas bag restraint system according to the invention, which is designed as a head gas bag restraint system, in the installed state.
  • In Fig. 1 ist ein Kopf-Seitengassack-Rückhaltesystem für Fahrzeuginsassen gezeigt, das sich längs des Dachrahmens von seitlich des Heckinsassen bis seitlich des Frontinsassen erstreckt. Das Rückhaltesystem umfaßt einen im wesentlichen im Querschnitt U-förmigen Aufnahmebehälter 3 mit einer Außenwand 5, mit der der Behälter 3 am Dachrahmen befestigt ist, und einer dem Fahrgastraum in eingebautem Zustand zugewandten Innenwand 7. Die Innenwand 7 ist im Querschnitt gesehen kürzer als die Außenwand 5. Am unteren Rand der Innenwand 7 sind über Scharniere 9 zahlreiche nacheinander angeordnete Klappen 11 vorgesehen (vgl. auch Fig. 6). In Fig. 1 ist die Klappe 11 in aufgeschwenktem Zustand gezeigt, so daß der Behälter 3 geöffnet ist. Am oberen Ende des Behälters 3 ist ein gefalteter Kopf-Gassack 13 angeordnet, der als sogenannter Vorhang ausgebildet ist und im aufgeblasenen Zustand die Seitenscheiben großteils abdeckt. Im Inneren des Gassacks ist eine sogenannte Lanze 15 vorgesehen, die sich fast über die gesamte Länge des Gassacks erstreckt und die als Gasleitung dient, damit der langgestreckte Gassack nicht nur von einem Ende aus, sondern annähernd über seinen gesamten oberen Rand gleichmäßig aufgeblasen wird. Die Lanze hat hierzu zahlreiche Öffnungen 17 an ihrem unteren Rand.In Fig. 1 is a head-side airbag restraint system for vehicle occupants shown that extends along the roof frame from the side of the Rear occupants extend to the side of the front occupant. The restraint system includes a substantially U-shaped in cross section Receptacle 3 with an outer wall 5 with which the container 3 on Roof frame is attached, and one in the passenger compartment in built Condition facing inner wall 7. The inner wall 7 is in cross section seen shorter than the outer wall 5. At the lower edge of the inner wall 7 are numerous flaps 11 arranged one after the other via hinges 9 provided (see also Fig. 6). In Fig. 1 the flap 11 is in shown pivoted state so that the container 3 is open. At the upper end of the container 3 there is a folded head gas bag 13 arranged, which is designed as a so-called curtain and in inflated state largely covers the side windows. Internally of the gas bag a so-called lance 15 is provided, which is almost extends over the entire length of the gas bag and that as a gas line serves so that the elongated airbag not only from one end, but almost uniformly over its entire upper edge is inflated. For this purpose, the lance has numerous openings 17 its bottom.

    Zwischen dem gefalteten Gassack 13 und dem Scharnier 9 ergibt sich ein sogenannter Schußkanal 19. Der Schußkanal 19 bestimmt zu Beginn des Aufblasvorgangs die Entfaltungsrichtung des Gassacks 13.The result is between the folded gas bag 13 and the hinge 9 a so-called weft channel 19. The weft channel 19 determines at the beginning the direction of deployment of the gas bag 13.

    Die Klappe 11 ist einstückig mit der Innenwand 7 verbunden. Das Scharnier 9 ist durch Bildung eines dünnen Wandungsteils gebildet. Die Klappe 11 ist aus mehreren Komponenten zusammengesetzt, nämlich einer innenseitigen, elastisch verformbaren Grundplatte 21, aus der auch die Innen- und Außenwand 5, 7 bestehen, sowie einer weiteren Komponente, nämlich einer an der Grundplatte 21 befestigten, plastisch verformbaren Auflage 23. Die Auflage 23 hat eine energieabsorbierende, verrippte Struktur, wie es in den Figuren 3 bis 5 an verschiedenen Beispielen dargestellt ist. Die Auflage 23 weist zahlreiche Rippen 25 auf, die als Wandung zwischen eingeschlossenen Hohlräumen, von denen in Figur 1 der Hohlraum 26 angedeutet ist, und Ausnehmungen 27 dienen. Die Ausnehmungen 27 sind nach außen, genauer gesagt zu der dem Fahrgastraum zugewandten Außenseite hin offen. Die Auflage kann Kreuzverrippungen (vgl. Fig. 3), halbkugelförmige Ausnehmungen 27 (vgl. Fig. 4) haben oder eine Wabenstruktur (vgl. Fig. 5) bilden. Selbstverständlich sind auch andere Strukturen möglich. Die Rippen 25 sind aus leicht plastisch verformbarem Kunststoffmaterial. Von außen wird eine dünne Abdeckung 29 (vgl. Fig. 1) auf die Auflage 23 geklebt oder gesteckt (z.B. durch eine Clip-Verbindung), damit die Ausnehmungen 27 nach außen geschlossen sind und sich insgesamt ein geschlossener Körper zur Energieaufnahme ergibt.The flap 11 is integrally connected to the inner wall 7. The Hinge 9 is formed by forming a thin wall part. The Flap 11 is composed of several components, namely one inside, elastically deformable base plate 21, from which also Inner and outer wall 5, 7 exist, as well as a further component, namely a plastically deformable attached to the base plate 21 Edition 23. Edition 23 has an energy-absorbing, ribbed structure, as shown in Figures 3 to 5 at different Examples is shown. The support 23 has numerous ribs 25 on that as a wall between enclosed cavities, of which the cavity 26 is indicated in FIG. 1, and recesses 27 are used. The recesses 27 are on the outside, more precisely to that of the passenger compartment facing outside open. The overlay can have cross ribbing (see FIG. 3), hemispherical recesses 27 (see. Fig. 4) or have a honeycomb structure (see. Fig. 5). Of course other structures are also possible. The ribs 25 are made of easily plastically deformable plastic material. From the outside a thin cover 29 (see FIG. 1) glued to the pad 23 or inserted (e.g. by a clip connection) so that the recesses 27 are closed to the outside and a closed overall Body for energy absorption results.

    Rastverbindungen 31 am unteren Rand jeder Klappe 11 und am unteren Rand der Innenwand 5 dienen dem Verschließen des Behälters 3, indem die Klappen 11 nach Einlegen der Lanze 15 mit dem Gassack 13 in Richtung zur Außenwand 5 geschwenkt werden und an dieser befestigt bleiben. Die Rastverbindungen 31 müssen selbstverständlich so ausgebildet sein, daß sie beim Öffnen der Klappen 11 durch den sich entfaltenden Gassack 13 nicht zum Zerstören des Gassacks 13 führen oder den Entfaltungsvorgang beeinflussen.Snap connections 31 at the bottom of each flap 11 and at the bottom Edge of the inner wall 5 serve to close the container 3 by the flaps 11 after inserting the lance 15 with the gas bag 13 in the direction be pivoted to the outer wall 5 and remain attached to it. The locking connections 31 must of course be designed in this way be that when you open the flaps 11 by the unfolding Gas bag 13 does not lead to the destruction of the gas bag 13 or the unfolding process influence.

    Bei der in Fig. 2 gezeigten Ausführungsform wird die energieabsorbierende Struktur der Klappe 11 dadurch erreicht, daß sie durch Umspritzen eines rohrförmigen, eingelegten Hohlkörpers 33 gebildet ist. In Fig. 2 ist auch der Dachrahmen 35 zu erkennen, an dem die Außenwand 5 befestigt ist. Im übrigen sind gleiche Teile auch mit gleichen Bezugszahlen in den verschiedenen Figuren bezeichnet.In the embodiment shown in Fig. 2, the energy absorbing Structure of the flap 11 achieved in that it Injection molding of a tubular, inserted hollow body 33 is formed is. In Fig. 2, the roof frame 35 can be seen on which the Outside wall 5 is attached. Otherwise, the same parts are also included the same reference numerals in the different figures.

    Eine weitere Möglichkeit, die Klappe 11 als Hohlkörper auszubilden, besteht beispielsweise darin, daß sie im sogenannten Gas-Innendruck-Verfahren hergestellt wird und dadurch Hohlräume gebildet werden. In Fig. 2 ist im übrigen zur Vereinfachung der Gassack 13 nicht dargestellt.Another possibility of designing the flap 11 as a hollow body consists, for example, in the so-called gas internal pressure process is produced and thereby cavities are formed. The gas bag 13 is not shown in FIG. 2 for the rest shown.

    Nach dem Einsetzen des Gassacks 13 zusammen mit der Lanze 15 und nach dem Schließen der Klappen 11 ist keine weitere Umhüllung des Aufnahmebehälters 3 vorgesehen, wie dies bei bislang üblichen Behältern der Fall ist. Diese werden nämlich üblicherweise in eine Folie eingeschweißt, damit der Behälter stets geschlossen bleibt.After inserting the gas bag 13 together with the lance 15 and after the flaps 11 have been closed there is no further covering of the receptacle 3 provided, as is the case with previously conventional containers the case is. These are usually welded into a film, so that the container always remains closed.

    Der Vorteil des erfindungsgemäßen Gassack-Rückhaltesystems besteht darin, daß sowohl im geschlossenen Zustand als auch im geöffneten Zustand des Aufnahmebehälters 3 Kopfverletzungen durch Aufprall des Kopfes am Behälter, insbesondere an der Klappe 11, reduziert werden können. Die Klappe 11 ist energieabsorbierend ausgebildet, indem sozusagen einige Schichten von Rippen 25 plastisch verformbar sind, so daß der Kopf nicht unmittelbar auf den Dachrahmen 35 prallt. Da auch die Außen- und Innenwand 5, 7 aus nachgiebigem Material, insbesondere elastischem Kunststoff sind, gibt der Behälter beim Aufprall des Kopfes so weit nach, ohne in Einzelteile zu zerbrechen, bis im Extremfall der Gassack 13 zusammengedrückt wird und die Innenwand 7 an der Außenwand 5 anliegt. Auch durch die Nachgiebigkeit des Behälters selbst kann Energie abgebaut werden.The gas bag restraint system according to the invention has the advantage in that both in the closed state and in the open Condition of the receptacle 3 head injuries due to the impact of the Head on the container, in particular on the flap 11, can be reduced can. The flap 11 is designed to absorb energy by so to speak, some layers of ribs 25 are plastically deformable, so that the head does not hit the roof frame 35 directly. There too the outer and inner walls 5, 7 made of resilient material, in particular are elastic plastic, the container gives on impact Head so far without breaking into pieces until in In extreme cases, the gas bag 13 is compressed and the inner wall 7 on the outer wall 5 abuts. Also thanks to the flexibility of the container even energy can be broken down.

    Die in Figur 7 dargestellte Ausführungsform unterscheidet sich von der in Figur 1 dargestellten insoweit, als die Auflage 23 nicht als separates, an der Grundplatte 21 angebrachtes Teil ausgebildet ist. Vielmehr ist der gesamte Behälter samt der Klappe und der verrippten Struktur einstückig ausgebildet. Damit die Klappe auch eine möglichst hohe Energieabsorptionsfähigkeit hat, ist ihre Ausrichtung samt der Ausrichtung ihrer Rippen relativ zu der durch einen Pfeil dargestellten Richtung der Krafteinleitung beim Aufschlag des Kopfes entscheidend. Die Grundplatte 21 erstreckt sich im wesentlichen parallel zur Krafteinleitungsrichtung, und die Rippen senkrecht hierzu, damit sie bei Krafteinleitung in die Ausnehmungen und Hohlräume verschoben werden können. Auch die Grundplatte 21 wird selbstverständlich bei Aufprall des Kopfes plastisch deformiert.The embodiment shown in Figure 7 differs from of the one shown in Figure 1 insofar as the pad 23 is not as separate, attached to the base plate 21 is formed. Rather, the entire container, including the flap and the ribbed one Structure formed in one piece. So that the flap is one if possible has high energy absorption capacity, its orientation including the Alignment of their ribs relative to that shown by an arrow Direction of force application when the head hits crucial. The base plate 21 extends essentially parallel to the direction of force application, and the ribs perpendicular this so that when force is applied to the recesses and cavities can be moved. The base plate 21 is also a matter of course plastically deformed on impact of the head.

    Bei der in Fig. 7 dargestellten Ausführungsform ist der Dachrahmen 35 detaillierter dargestellt. Damit der Schußkanal 19 zur Seitenscheibe (nicht dargestellt) exakt ausgerichtet ist, sind an der Außenwand 5 zahlreiche Stege 37 einstückig angeformt, die durch Querstege 39 miteinander verbunden sind. Bei bislang bekannten Rückhaltesystemen war in diesem Bereich stets ein Formschaumteil zwischengelegt, das nun entfallen kann. Durch die Stege 37 und die Querstege 39 ergeben sich im eingebauten Zustand abgeschlossene Hohlräume zwischen der Außenwand 5 und dem Dachrahmen 35, in denen die Spitzen der Rastverbindungen 31, die beim Öffnen der Klappe 11 abgerissen werden, liegen bleiben. Auch die Stege 37, 39 nehmen Energie beim Aufprall des Kopfes des Insassen auf. In the embodiment shown in Fig. 7 is the roof frame 35 shown in more detail. So that the shot channel 19 to the side window (not shown) is exactly aligned, are on the outer wall 5 numerous webs 37 are integrally formed, which are interconnected by cross webs 39 are connected. With previously known restraint systems a molded foam part is always interposed in this area, the now can be omitted. The webs 37 and the cross webs 39 result closed cavities between the outer wall when installed 5 and the roof frame 35, in which the tips of the latching connections 31, which are torn off when the flap 11 is opened, remain lying. Also the webs 37, 39 take energy upon impact with the occupant's head on.

    Damit im Bereich der Stege 37 und der Querstege 39 noch mehr Energie aufgenommen werden kann, ist ein Hohlkörper in Form eines langgestreckten Rohres in entsprechende Ausnehmungen in den Stegen 37 eingesetzt, die eine Clip-Verbindung darstellen. Das Rohr wird beim Verlagern der Außenwand 5 plastisch deformiert und nimmt dadurch Energie auf. Es ist über die Clipverbindung auch auswechselbar. Das Rohr selbst ist dem Verlauf des Dachrahmens 35 folgend entsprechend gebogen. Es ist auch möglich, ein Rohr entsprechend dem Rohr 51 an der Klappe 11 vorzusehen, indem es zum Beispiel von unten in entsprechende Ausnehmungen in den Rippen eingesetzt wird.So even more in the area of the webs 37 and the transverse webs 39 Energy can be absorbed is a hollow body in the form of a elongated tube in corresponding recesses in the webs 37 used that represent a clip connection. The pipe is at Moving the outer wall 5 plastically deformed and thereby takes Energy on. It can also be replaced via the clip connection. The Pipe itself follows the course of the roof frame 35 accordingly bent. It is also possible to have a pipe corresponding to the pipe 51 on the Flap 11 to be provided, for example, from below in corresponding Recesses in the ribs is used.

    Claims (15)

    1. A head side gas bag restraint system for vehicle occupants, comprising a gas bag (13), a receiving container (3) for the gas bag (13), which container is to be secured to the vehicle, the receiving container (3) having an outer wall (5), an inner wall (7) facing the passenger compartment in the installed state, and at least one flap (11) which closes the container (3) in the non-activated state of the system and which swings open in the case of restraint, and with an ejection channel (19) for the gas bag (13) unfolding in the case of restraint being formed between the outer and inner walls (5, 7), characterized in that the flap (11) has structures arranged thereon, more particularly formed integrally therewith, which have recesses (27) or cavities (26) and are plastically deformed by the impact of the head.
    2. The gas bag restraint system according to claim 1, characterized in that the flap (11) has a ribbed structure and that the recesses (27) or cavities (26) are provided between the ribs (25).
    3. The gas bag restraint system according to claim 2, characterized in that recesses (27) between the ribs (25) are open toward the interior and/or exterior of the container.
    4. The gas bag restraint system according to either one of claims 2 or 3, characterized in that the flap (11) includes a base plate (21) connecting the outer and inner walls with each other in the closed state, and ribs (25) projecting from the base plate substantially at a right angle.
    5. The gas bag restraint system according to any of claims 2 to 4, characterized in that when the restraint systems are in the installed state, the flap (11) of the closed container extends approximately horizontally and connects the inner and outer walls with each other, and that the ribs extend substantially vertically.
    6. The gas bag restraint system according to claim 1, characterized in that a cavity is formed by injection-molding around an inserted hollow body.
    7. The gas bag restraint system according to any of the preceding claims, characterized in that the flap (11) is formed integrally with the inner wall (7).
    8. The gas bag restraint system according to claim 7, characterized in that the flap (11) has a multi-component structure.
    9. The gas bag restraint system according to any of the preceding claims, characterized in that a covering (29) is arranged on the face of the flap (11) facing the passenger compartment.
    10. The gas bag restraint system according to any of the preceding claims, characterized in that at least one snap-in connection (31) is provided, which holds the flap (11) in position when the container (3) is closed.
    11. The gas bag restraint system according to any of the preceding claims, characterized in that the inner wall (7) yields in a manner deforming elastically or plastically up to abutment against the outer wall (5).
    12. The gas bag restraint system according to any of the preceding claims, characterized in that a plurality of flaps (11) is provided along the container, arranged one after the other.
    13. The gas bag restraint system according to any of the preceding claims, characterized in that webs (37, 39) are integrally formed on the outer face of the outer wall (5), the container (3) lying against the vehicle via the webs (37, 39).
    14. The gas bag restraint system according to any of the preceding claims, characterized in that at least one hollow body (51) is inserted in the webs (37, 39) for stabilizing the outer wall (5).
    15. The gas bag restraint system according to claim 14, characterized in that the hollow body (51) is arranged parallel to the longitudinal extent of the container and is releasably secured to the webs (37, 39) via a clip-on connection.
    EP98115832A 1997-09-18 1998-08-21 Side airbag head restraint system for a vehicle passenger Expired - Lifetime EP0903268B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE29716793U DE29716793U1 (en) 1997-09-18 1997-09-18 Airbag restraint system for vehicle occupants
    DE29716793U 1997-09-18

    Publications (2)

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    EP0903268A1 EP0903268A1 (en) 1999-03-24
    EP0903268B1 true EP0903268B1 (en) 2002-03-20

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    EP98115832A Expired - Lifetime EP0903268B1 (en) 1997-09-18 1998-08-21 Side airbag head restraint system for a vehicle passenger

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    US (1) US6170861B1 (en)
    EP (1) EP0903268B1 (en)
    JP (1) JPH11147446A (en)
    DE (2) DE29716793U1 (en)
    ES (1) ES2174362T3 (en)

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    JPH11147446A (en) 1999-06-02
    DE59803412D1 (en) 2002-04-25
    EP0903268A1 (en) 1999-03-24
    ES2174362T3 (en) 2002-11-01
    US6170861B1 (en) 2001-01-09
    DE29716793U1 (en) 1998-01-22

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